How to gain more elevation?

I have a Swarovski Z5 3.5-18 x 44 BT mounted with Talley low one piece rings/bases on my Mark V. With my scope zeroed at 100m I only have 10 moa of up adjustment left in the turret. With the Ballistic turret set up I can only get my scope zeroed to 500m before the turret maxes out. Is there any way of getting more adjustment to zero my scope for 500+ metres? If I went to a med or high scope ring would this help?

20 MOA bases or Burris Z rings or a combination of both should do it. The only thing higher rings will do is just raise the scope higher off the action. You need to have the scope mounted in such a way that the center line of the scope is at an angle to the center line of the barrel.